Cement block machine



Nov. 23, 1948. K. W. 355 ET-AL CEMENT BLOCK MACHINE 3 Sheets-Sheet 1 Filed Sept. 13, 1946.

I inventors KEILY W- 6/385 ROY fill. MAN

Attorneys 4 K. w. GIBBS z'rm. 2,454,442

. I I CEMENT BLOCK MACHINE Filed Sept. 1s, 1946 1 s Sheets-Shet 2 1 f 4 2 Z6 f l l W m" Q a, a f

Attorneys NOV. 1948. K, w, GIBBS ET AL 2,454,442

" CEMENT BLOCK MACHINE Filed Sept. 15, 1946 I 3 Sheets-Sheet I5 Im'enlurs KELLY 14 4/856 F0? HILL/1AA! Alto rue Patented Nov. 23, 1948 UNITED STATES PATENT OFFICE CEMENT BLOCK MACHINE Kelly W. Gibbs and Roy Hillman, Ashland, Ky.

Application September 13, 1946, Serial No. 696,644

2 Claims. 1

This invention relates to cement block forming machines, the principal object being to provide such an apparatus capable of turning out cement blocks in a quick and efficient manner without requiring tedious and laborious effort on the part of the attending workmen.

The principal object of the present invention is to provide a cement block forming machine into which quickdrying cement can be poured and at the proper interval ejected in the form of a block, which can be set aside on a rack or other support for drying.

Another important object of the invention is to provide a cement block forming machine wherein the semihardened block is lifted bodily in the mold and ofi of tapered cores, thus alleviating to a considerable extent damage and waste which presently occurs in machines where the cores are moved away from the formed block.

Still another object of the invention is to provide a machine of this character which can be quickly taken apart and repaired or stored in a limited space.

A further object of the invention is to provide a mechanical apparatus for forming cement blocks wherein but a minimum expenditure of human effort is necessary in removing the formed block without the presence of obstacles or structure hindering such action and which in present day machines frequently result in damage to the semi-hard block.

Still a further object of the invention is to provide a machine of this character which is positive-acting and not susceptible to the ready development of defects.

These and various other objects and advantages of the invention will become apparent to the reader of the following description.

In the drawings:

Figure l is a side elevational view of the machine.

Figure 2 is a top plan view.

Figure 3 is an end elevational View.

Figure 4 is a cross sectional view taken substantially on a line 44 of Figure 3 and looking at the bottom of the forming box.

Figure 5 is a section taken substantially on line 5-5 of Figure 4.

Figure 6 is a fragmentary vertical sectional view taken substantially on line 6-6 of Figure 4.

Figure 7 is an enlarged longitudinal fragmentary sectional View.

Figure 8 is a fragmentary perspective view showing the frame and portions of the cores.

Fig. 9 is a perspective view of one of the end walls.

Figure 10 is a fragmentary perspective view of thepallet or elevator.

Referring to the drawings, numeral 5 denotes a rectangular shaped frame of angular construction, supported at its corners by angle legs 6, the legs being connected at their intermediate portions by brace bars 1.

Adjacent each end of the frame 5 is a cross bar 8 and secured to these cross bars are vertically disposed cores 9 of substantially rectangular cross section with their edges bevelled off as at It).

The frame 5 is made of side members a, a and end members 0, b. The medial portions of the side members a, a are provided with depending and slotted guides II in which upper rollers l2 on an upper transverse bar l3 ride and also lower rollers I4 at the ends of a lower horizontal or transverse bar [5, these bars l3, [5 being welded or otherwise secured as at It to vertical legs l1, I! which bear against the bottom of a pallet or elevator plate Ma.

A lug [8 depends from the front slotted guide I I and to this is pivotally secured, the lower end of a link bar I9, the other end being pivotally secured to the intermediate portion of a treadle arm 28 having a pedal 20a at its outer end and a.

pivotal connection between its inner end and the medial portion of the transverse bar l3, as at 2012.

Rising from the bottom section 2| are end walls 22, 22 each having an inwardly disposed boss 23 at its inner side somewhat narrower than the width of the wall and having its corner portions bevelled oif as at 24.

Side walls 25, 25 have their lower edges resting upon the inturned flanges of the side members a, a of the frame 5 and abutt the side edges of the ends walls 22, 22 as shown in Figure 3.

Through the end portions of the side walls 25, 25 are disposed screw shafts 26, each provided with a crank handle 21, at one end, whereby the end walls can be drawn in snug engagement with the vertical edge faces of the end walls 22.

It is to be understood, that the cores 9 have a slight vertical taper to facilitate dislodgement of the semi-solid blocks therefrom when the block is lifted by the elevator plate I4a,

Material for use in the block can be prepared by a conventional concrete mixer or by hand with a shovel. The material is poured into the boxlike structure, to the proper height and due to the quick-drying property of the cement, the block is ready to be removed to a drying rack, or the like,

in a short while.

pedal 20, which forces the vertical members I! upwardly, lifting the pallet or elevator Ma. If desired, the end walls 22 can be removed and the block lifted by the elevator Ma, that is by hand, and transported to a point where the block is allowed to dry.

It may be desirable to have a metal plate under the pallet or elevator Ma, but for general purposes, it has been found that the use of-a-cl'oss bar transversely: under the elevator I4, is sufficient.

Obviously, the structure can be readily demounted for convenient transportation, and further, due to the lightness of the machine, the

same can be bodily transported from one near point to another. a l i The parts of the machine can be constructed of inexpensive material.

While the foregoing description has set forth the invention in specific terms, it is to be understo d, that numerous changes in the shape, size and materials may be resortedto, without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, what is claimed as new is: l a

1. A block forming machine comprising a frame having side bars and endbars formed with upstanding fianges, guide bars extending downwardly from the side bars and formed with vertical slots, one guide bar having an ear at its lower end, cross bars extending between the side bars, Vertical cores rising from the cross bars, a bottom carried by said frame and having end sections and ,an intermediate section, the intermediate section constituting apallet free .from the frame and being formed with openings through which the cores pass, side and end walls removably resting upon the bottom and releasably held upright in engagement with each other, push bars extending downwardly from said pallet and spaced from each other transversely thereof, upper and lower horizontal bars secured to the push bars and extending transversely of said frame and carrying rollers engaged in the slots of the guide bars, a treadle pivoted to the upper horizontal bar and projecting outwardly from a side of the frame, and a link pivoted at its lower end to the ear and at its upper end to the treadle outwardly of the frame.

2. A block forming machine comprising a ,frame, cores carried by said frame, a bottom carried by said frame and including a section formed with openings through which the cores pass and constituting a pallet shiftable vertically, side walls and end walls releasably mounted upright upon the bottom, guides extending downwardly from oppositesides of the frame and formed with vertical sl-ots, push bars extending downwardly from the pallet and spaced from each other transversely thereof, cross bars carried by said push bars and carrying rollers rotatably eng-aged'in the slots of said guides, a treadle extending transversely REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 752,298 Perrin Feb. 15, 1904: 812,336 Glatfelter Feb. 13, 1906 

